Home / 15,396.68-21,247.40-8,323.08

Finding the Fourth Proportional to 15,396.68, 21,247.40 and 8,323.08

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Solution

The fourth proportional to 15,396.68, 21,247.40 and 8,323.08 is: 11,485.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,396.68 : 21,247.40 = 8,323.08 : x
  2. Step 2: Convert to fraction form
    15,396.68/21,247.40 = 8,323.08/x
  3. Step 3: Cross multiply
    15,396.68x = 21,247.40 × 8,323.08
  4. Step 4: Simplify right side
    15,396.68x = 176,843,809.99
  5. Step 5: Solve for x
    x = 176,843,809.99/15,396.68
  6. Step 6: Final answer
    x = 11,485.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.